add. ·noun the quadrennial celebration of the modern olympic games; as, the first olympiad (1906).
2. olympiad ·noun a period of four years, by which the ancient greeks reckoned time, being the interval from one celebration of the olympic games to another, beginning with the victory of cor/bus in the foot race, which took place in the year 776 ·b.c.; as, the era of the olympiads.